The conventional notion of science and technology on the nanometer sca
le is the progress of observation and precision down to the atomic lev
el and the continued miniaturization from today's microelectronics to
tomorrow's nanoelectronics. A more adventurous approach to the nanowor
ld is the assembly scenario, in which nanomachines are assembled from
nanometer-scale building blocks, including molecules anl macromolecule
s. Together, miniaturization and assembly will provide new opportuniti
es and novel ways of solving problems, inspired by the most elegant an
d efficient ways of nature. Nanotechnology is crucial to ensuring a su
stainable development.